Kelly also said in an interview with Fox News host Laura Ingraham that aired Monday night that the removal of monuments to the Confederacy shows "a lack of appreciation of history." The retired Marine Corps general was responding to a question about a Virginia church's decision to remove historical markers for Lee and George Washington.

Kelly said that applying current thinking on social issues to figures in history is "very, very dangerous." He said the Civil War was sparked by "the lack of the ability to compromise."